Soft handoff in a wireless communication system
First Claim
1. A method of performing a multi-channel soft handoff in a wireless communication system, the method comprising:
- establishing wireless communication between a mobile unit and a first fixed unit over a first frequency channel;
establishing wireless communication between the mobile unit and a second fixed unit over a second frequency channel such that the mobile unit is simultaneously exchanging substantially equivalent communications with the first fixed unit over the first frequency channel and the second fixed unit over the second frequency channel, wherein the first and second channels are different frequency channels; and
terminating the communication between the mobile unit and the first fixed unit over the first frequency channel.
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Accused Products
Abstract
A method and system for performing a multi-channel soft handoff of a communication service in a wireless communication system between two different frequency channels. In one aspect of the multi-channel soft handoff, the handoff could be an inter-cell (cell to cell) handoff between respective controlling base stations. In another aspect of the multi-channel soft handoff, the handoff could be an intra-cell (within the same cell) handoff between different frequency channels supported by the controlling base station. In yet another aspect of the multi-channel soft handoff, the handoff could be an inter-cell (cell to cell) handoff between respective controlling base stations over the same frequency channel followed by an intra-cell handoff at the new base station between different frequency channels.
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Citations
23 Claims
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1. A method of performing a multi-channel soft handoff in a wireless communication system, the method comprising:
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establishing wireless communication between a mobile unit and a first fixed unit over a first frequency channel;
establishing wireless communication between the mobile unit and a second fixed unit over a second frequency channel such that the mobile unit is simultaneously exchanging substantially equivalent communications with the first fixed unit over the first frequency channel and the second fixed unit over the second frequency channel, wherein the first and second channels are different frequency channels; and
terminating the communication between the mobile unit and the first fixed unit over the first frequency channel. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of performing a multi-channel soft handoff in a wireless communication system, the method comprising:
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establishing wireless communication between a mobile unit and a first fixed unit over a first frequency channel;
establishing wireless communication between the mobile unit and the first fixed unit over a second frequency channel such that the mobile unit is simultaneously exchanging substantially equivalent communications with the first fixed unit over the first and second frequency channels, wherein then first and second frequency channels are different frequency channels; and
terminating the wireless communication between the mobile unit and the first fixed unit over the first frequency channel. - View Dependent Claims (8, 9, 10, 11)
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12. A method of performing a multi-channel soft handoff in a wireless communication system, the method comprising:
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establishing wireless communication between a mobile unit and a first base station over a first frequency channel;
establishing wireless communication between the mobile unit and a second base station over the first frequency channel such that the mobile unit is simultaneously exchanging substantially equivalent communications with the first and second base stations over the first frequency channel;
terminating the communication between the mobile unit and the first base station over the first frequency channel;
establishing wireless communication between the mobile unit and the second base station over a second frequency channel such that the mobile unit is simultaneously exchanging substantially equivalent communications with the second base station over the first and second frequency channels, wherein then first and second frequency channels are different frequency channels; and
terminating the communication between the mobile unit and the second base station over the first frequency channel. - View Dependent Claims (13, 14)
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15. A wireless communication system comprising:
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a mobile unit including a first receiver to communicate over a first frequency channel, a second receiver to communicate over a second frequency channel, and a third receiver to communicate over a third frequency channel wherein the first second and third frequency channels are different frequency channels;
a first base station to establish wireless communication with the mobile unit over the first frequency channel; and
a second base station to establish wireless communication with the mobile unit over the second frequency channel, wherein the mobile unit is simultaneously exchanging substantially equivalent communications with the first and second base stations over the first and second frequency channels. - View Dependent Claims (16, 17, 18)
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19. A wireless communication system comprising:
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a mobile unit including a first receiver to communicate over a first frequency channel, a second receiver to communicate over a second frequency channel, and a third receiver to communicate over a third frequency channel wherein the first second and third frequency channels are different frequency channels;
a first base station to establish wireless communication with the mobile unit over the first frequency channel and to establish wireless communication with the mobile unit over a second frequency channel, wherein the mobile unit is simultaneously exchanging substantially equivalent communications with the first base station over the first and second frequency channel. - View Dependent Claims (20, 21, 22, 23)
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Specification